A NEW VARIETY AND A NEW RECORD OF THE FAMILY POTTIACEAE FROM CHINA S0ME NEW TAXA 0F P0TTIACEAE FR0M XIZANG (TIBET) Morphology and taxonomy of leaf papillae and mammillae in Pottiaceae of China Light Microscope Observation of Leaf Papillae and Mammillae in Pottiaceae and their Taxonomic Sense Anatomy Studies of Five Species of Pottiaceae from Xinjiang Leaf Cell Morphology Characteristics of Family Pottiaceae and Systematic Significance STUDIES ON SPORE MORPHOLOGY OF 7 SPECIES OF POTTIACEAE (MOSSES) A New Record of Tortella alpicola Dix.(Pottiaceae) in China Morphological Characteristics and Geographical Distribution of Leptodontium pungens and Syntrichia amphidiacea (Pottiaceae) Additions to Pottiaceae Flora of Gansu Province Revision and New Distribution Report of Gyroweisia yunnanensis (Pottiaceae),an Endemic Species of China New Distribution Record of Phascum (Pottiaceae) in China Peristome Morphology Characteristics of 16 Species of Family Pottiaceae and their Systematic Significance Spore Morphology of 26 Species of Family Pottiaceae and Its Systematic Significance New records of Pottiaceae in Henan Province, China Weissia muhlenbergiana (Pottiaceae), A Newly Recorded Species from China